How to start node app with development flag?

Question

At top of my app.js file I put

NODE_ENV=\'development\';

but I get error that NODE_ENV is not defined. But in the nodejs documentation is says

Answer 1

In order to start from cmd you can try

NODE_ENV=development node yourappname.js

If you are doing this in server where forever is installed you can mention the environment variable like

NODE_ENV=development forever start yourappname.js